ASTM International

Standard Test Method for Polyurethane Raw Materials: Instrumental Measurement of Tristimulus CIELAB Color and Yellowness Index of Liquids
 N D7133

Annotation

This test method provides an instrumental method for measuring the CIELAB color and Yellowness Index (YI) of liquid polyurethane raw materials. The CIELAB and YI results are derived from mathematical manipulation of CIE tristimulus values in accordance with Practices E308 and E313, respectively.

The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

NOTE 1—There is no known ISO equivalent to this standard.

*A Summary of Changes section appears at the end of this standard

Автоматический перевод:

Стандартный метод тестирования для сырья полиуретана: инструментальное измерение трехцветного сигнала цвет CIELAB и индекс желтости жидкостей

Этот метод тестирования предоставляет инструментальный метод для измерения цвета CIELAB и Yellowness Index (YI) жидкого сырья полиуретана. CIELAB и результаты YI получены из математического управления трехцветными значениями CIE в соответствии с Методами E308 и E313, соответственно.